US2028501A - Electric gauge - Google Patents

Description

' R. coWAN ELECTRIC GAUGE Jan. 21, 1936.

Filed April 18, 1932 4 Sheets-Sheet 1 Inventor Jan. 21, 1936.

R. COWAN 2,@9895@ ELECTRIC GAUGE Filed April 18, 1932 4 Sheets-Sheet 2 y 55 Invenvor 6.9 J' 3'9- i By 'QM Jan. 21, 1,936.

R. COWAN 2,28,501

ELECTRIC GAUGE Filed April 18, 1952 4 Sheets-Sheet 5 Jan. 21, 1936.

Filed April 18, 1952 R'. coWAN ELECTRIC GAUGE 4 Sheets-Sheet 4 6,6 Inventor ZZ'/ yzaazz V @Zwan/3:22

iforney Patented Jan. 21, 1936 UNITED STATES PATENT OFFICE ELECTRIC GAUGE Rich Cowan, Comyn, Tex.

Application April 18,

1 Claim.

This invention relates to new and useful improvements in electric registers and more particularly to a register of the electrical float controlled type.

The principal object of the invention is to provide a liquid gauge particularly adapted for use in conjunction with reservoirs such as contain gasoline, oil, or other fluids.

Another important object of the invention is to provide a gauge which will readily indicate varying capacity either on the increase or decrease.

These and numerous other important objects and advantages of the invention will become apparent to the reader of the following specification.

In the drawingS:-

Figure 1 represents a diagrammatic View disclosing the invention in its entirety.

Fig. 2 represents a rear elevational view of the 20 gauge with the back cover plate removed.

Fig. 3 represents a vertical sectional view through the gauge.

Fig. 4 represents a fragmentary detailed elevational view of the electro-magnetic ratchet means.

Fig. 5 represents a fragmentary detailed sectional View disclosing the electro-magnetic means.

Fig. 6 represents a fragmentary enlarged horizontal sectional view taken substantially on line 6-6 of Fig. 2.

Fig. 7 represents an enlarged fragmentary detailed sectional View taken substantially on line '1 -'I of Fig. 2.

Fig. 8 represents a fragmentary enlarged deta-iled sectional view of the toothed switch controlling wheel and associated mechanisms.

Fig. 9 represents a vertical sectional view through the structure shown in Fig. 8.

Fig. 10 represents a horizontal sectional View through the upper portion of the structure shown in Fig. 8.

Fig. 11 represents a perspective view of the contactor of the switch.

Fig. l2 represents an enlarged fragmentary detailed sectional view taken substantially on line I2I2 of Fig. 11.

Fig. 13 represents a diagrammatic view disclosing the electrical connections between the electrical devices involved.

Referring to the drawings wherein like numerals designate like parts, it can be seen that numeral 5 generally refers to the container in which the fluid to be gauged is located, while numeral 6 generally refers to the transmitting or switching device, which is connected to the CII 1932, Serial No. 606,057

receiver or remotely located indicating gauge generally referred to by numeral 'I'.

As is clearly shown in Fig. S, the switching mechanism E involves a cylindrical two part casing 8, the sections being denoted by a a and b. The section b is secured to the section a by suitable means c while the neck 9 extends upwardly from the section b and internally supports a di-electric plate i0 supporting the adjustable contacts I2-I2 and I3|3, the contacts S22-S2 being complementary and the contacts i3-i3 being complementary respectively.

In Fig. l2, numeral I 4 generally refers to the contacter which consists of a pair of spring brackets I5-I5, secured to the aforementioned di-electric plate Ii, so as to depend therefrom. A strap I5 bridges the lower ends of the bracket members i-i, the ends of the strap I8 being insulated from the ends of the brackets I5 by suitable insulating material I'I. the bracket members i5 carries a contact I8 on each side thereof, and at the intermediate portion of the strap I6, depends a tongue I9 which is engageable with the teeth 20 on the disk 2|.

This disk 2I is carried by the shaft 22 which extends through the central portion of the housing 8, the tongue being so disposed as to permit the teeth to wipe against the same so as to flex the bracket members i5-i5 to engage the contacts I8 with the corresponding contacts I2-I3, regardless of which direction the disk 2I is rotated.

To always maintain the tongue i9 depending between a pair of teeth and in spaced relation to the disk 2 I, a roller 23 is carried by the swingable bracket 24 and has a leaf spring 25 bearing against the same, to always maintain the roller urged between the pair cf the teeth 20 on the disk 2 I. Obviously, when the roller 23 is engaged in the position shown in Fig. 8, the disk 2| is so positioned, that the tongue I9, while disposed between a pair of teeth, is not touching the teeth, nor the disk 2I, thereby maintaining the transmitting circuit broken.

As is shown in Fig. 9, a large drum 26 is located on the shaft 22 and on this drum 23 is wound the cable 21 which extends upwardly through the conduit 29 and over the pulleys 28 therein, to depend into the tank 5 where it is attached to the float 30.

As is clearly shown in Fig. 8, the shaft 22 is provided with an opening extending transversely therethrough to receive the leaf spring 3I. On the adjacent side of the drum 26 are two pairs of lugs 32-32 and 33-33, these lugs being in Each of indicating hand and consists of the horse shoe,

these two complementary groups, and each provided with a set screw Sri. These set screws bear against the ends of the spring 3l in the manner shown in Fig. 8, so that proper adjustmentl can be made to insure exactness in position between the disk 2l and the shaft 22 with respect to the switching means disclosed above the disk 2|.

On the shaft 22 of the drum 26 is a smaller drum 35 which has a cable 36 wound thereon. rlhis cable Sii extends downwardly in the barrel 3l which depends from the lower section. a of the housing 8 where it is equipped with a counter- V'weight 35.

Reference will now be made to the receiver or gauge device generally referred to by numeral 'i and in Fig. l, it will be seen that the same involves the construction of a casing 39 supported upon the base it and having a front paneli 4I fronted by a pane of glass G2. The back of this casing 39 is provided with a removable plate 33 and as is clearly shown in Fig. 3,y the panel ll has an opening therein through which the bushing de extends. In this bushing fifi operates the stub shaft d5 which at the front side ofv the panel ii is equipped with the indicating hand lit. The opposite end of the stub shaft 35 is provided with a ratchet wheel Iii'.

It is course to be understood, that this shaft l5 can he geared down or geared up to operate indicating hands to denote various other readings, either in regard to volume, depth or other measurements.

As is clearly shown in Fig. 2, numeral i3 represents a leaf spring anchored as at its to the rear side ofthe panel lli and this at its free end is provided with a brush or some other element for frictional engagement with the ratchet wheelv d?, so that the ratchet wheel di will not be free to rotateindependently of the ratchet mechanism shown beneath the ratchet wheel in Fig. 2.

Numeral 5i represents the electromagnetic means cooperating with-the ratchet wheel el and magnet secured to the panel di by the di.- electric plate 53 and tie bolts 5. A bracket 55 (see Fig. 3), supports the magnetic coil, in that a pin 53 extends through the di-electric intermediate section e? of the armature which has the core sections extending therefrom and.

upon each of which is an electro-magnetic coil 59 each opposed to one pole of theaforementioned.

hors-e shoe magnet 52.

An arm tt extends upwardly from the cli-electric section 5l and has a pin Si at its upper end. swingably supporting a pair of pawls Q-.. which are connected together in the upwardly diverged position shown in Fig. 2 by the coiled'.

spring 5t. Numeral 55 represents slotted plates slidabie on the screws tit. Each of these plates t5 is equipped with an outstanding lug. 61; and

each of these lugs 6l forms a fulcrum for a pawl 62 or 63.

Obviously, When the coils 59 rock and the arm 60 oscillates, the corresponding pawl 62 or 63 yielding with the tension of the spring S4 and against its corresponding fulcrum lug 6'! Will engage the ratchet wheel il and move the ratchet wheel the distance of one tooth.

Numerals @S8-58 represent adjustable stops for the arms. te, while numeral 5.3 represents an adjustable bracket extending outwardly from the rear side of the panel lll. The outer end of this bracket $9 has a leaf spring 'iii anchored thereto as at 7l. The other end of the leaf spring 1G is rigidly secured as at i2 to the intermediate portion of the armv $9. Thus the arm 69 is normally under tension to obviously equalize the position of the coils normally between the poles of the magnet 52.

It can now be seen in Fig. 13, that the battery circuit 'S includes the battery 14, the manual switch i5 and the contacts S-l 8k whichA are inisulated from each other as shown in Figs. 7 and 12.

Numeral 'E5 represents thev circuit for one of the coils 5t while numeral 'il represents the circuit for the other coil, and obviously, when thev wheel 2i ceases operating in on-e direction, to engage for instance the contacts lZ-E'S on the left inFig. i2, and the` wheel 2i' rotatesV in theY opposite direction, when the tank 5 is being lled and the level of the ilud in the tank changes, the contact-s it--iS will engage the remaining contacts Iii-E3, on the right in Fig. 13 for reversing the circuit to the coiis 5S-E;. to simply change the polarity thereof, softhatthe coils and the arms will be rocked to the oppositefdirectien for obviousy feedingY the ratchetA Wheel' 4l in the opposite direction..

While Y the foregoing specification: sets forth. the inventionv inA specic` terms-,- iti is: tot be understood that numerous changes in the shape-.sizeandmateria-ls may be resorted. to Without departing fromV the spirit and scope: of; the invention asll claimed hereinafter.

HavingV thus described my invention, whatI. claim as new is:-

Feed means for ratchet. wheels. r comprisingv a-` pair of pawls, means for swingably mounting the pawls adjacent a wheel for engagement there with, adjustable fulcrunis for the said pawls, said fulcrums each consisting of a slotted plate, a; member disposedv through. the` slott of: the pla-te for tightening the plate against a suitable sup-- port, and-a spring connecting: said pawls-togetherl and tensionally urging the saine.' toward'. the wheel, eachy of saidplatesbeing providedwith ai lug against which said pawlsifulcrum;

RICH COWAN;

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